20-10
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Chapter20 Co nf iguring QoS
Understanding QoS
Figure20-4 Policing and Marking Flowchart
46977
Yes
Yes
No
No
Pass
through Drop
Mark
Read the DSCP
of the packet.
Is a policer configured
for this DSCP?
Check if the packet is in
profile by querying the policer.
Check out-of-profile action
configured for this policer. Drop packet.
Modify DSCP according to the
policed-DSCP map.
Start
Done